US1987451A - Precious metal alloy composition - Google Patents

Precious metal alloy composition Download PDF

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Publication number
US1987451A
US1987451A US745587A US74558734A US1987451A US 1987451 A US1987451 A US 1987451A US 745587 A US745587 A US 745587A US 74558734 A US74558734 A US 74558734A US 1987451 A US1987451 A US 1987451A
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US
United States
Prior art keywords
precious metal
metal alloy
alloy composition
indium
alloy
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US745587A
Inventor
Norris O Taylor
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SPYCO SMELTING AND REFINING Co
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SPYCO SMELTING AND REFINING CO
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Priority to US745587A priority Critical patent/US1987451A/en
Application granted granted Critical
Publication of US1987451A publication Critical patent/US1987451A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C5/00—Alloys based on noble metals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S29/00—Metal working
    • Y10S29/022—Method or apparatus using indium

Definitions

  • I utilize the fol- I claim: lowing elements combined in proportions by A precious metal alloy composition composed weight within the following ranges: I of from 25 to 65% of gold, from 2 to 25% of pal- Per cent ladium, from 10 to 33% of silver, from 10 to 25% Gold to of copper, and from to 5% of indium. 20

Description

Patented Jan. 8, 1935 V UNITED STATES PATENT OFFICE PRECIOUS METAL ALLOY COMPOSITION Norris 0. Taylor, Minneapolis, Minn., assignor to Spyco Smelting and Refining Company, Minneapolis, Minn.
No Drawing. Application September 26, 1934, Serial No. 745,587
1 Claim. (Cl. 75-1) My invention relates to precious metal alloy Among the advantages of my alloy are the folcompositions. It relates more particularly to lowing: compositions of this character for use in wrought 1. It resists oral and atmospheric corrosion. and cast dental work and for use in manufactur- 2. It melts smoothly and casts easily. 5 ing jewelry. An object of the invention in gen- 3. It is lighter in weight than the conventional 15 eral is to produce an alloy which has distinct dental casting gold alloys. advantages for such uses and an object in par- 4. It is of pleasing color. ticular is to improve on the composition disclosed 5. The melting range is in the same temperaand claimed in my Patent No. 1,965,012, issued ture range as that of gold alloys commonly used July 3, 1934. in dentistry and is considerably lower than that 10 The full objects and advantages of my invenof the alloy disclosed in my'prior patent above tion will appear in connection with the detailed referred to. description thereof and the novel featuresof the The use of indium is of particular importance invention will be particularly pointed out in the in controlling or improving color, corrosion reclaim. sistance, melting range, hardness, and strength. 15
In carrying out my invention, I utilize the fol- I claim: lowing elements combined in proportions by A precious metal alloy composition composed weight within the following ranges: I of from 25 to 65% of gold, from 2 to 25% of pal- Per cent ladium, from 10 to 33% of silver, from 10 to 25% Gold to of copper, and from to 5% of indium. 20
Palladium 2 to 25 V Silver; 10 to 33 NORRIS O. TAYLOR. Copper 10 to 25 Indium; to 5
US745587A 1934-09-26 1934-09-26 Precious metal alloy composition Expired - Lifetime US1987451A (en)

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US745587A US1987451A (en) 1934-09-26 1934-09-26 Precious metal alloy composition

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US745587A US1987451A (en) 1934-09-26 1934-09-26 Precious metal alloy composition

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US1987451A true US1987451A (en) 1935-01-08

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438967A (en) * 1943-05-21 1948-04-06 Indium Corp Indium-gold article and method
US2596454A (en) * 1949-09-10 1952-05-13 Metals & Controls Corp Gold alloys
US3424577A (en) * 1966-05-25 1969-01-28 Jelenko & Co Inc J F Metal alloy composition
US3767391A (en) * 1969-05-19 1973-10-23 Pennwalt Corp Tarnish resistant alloy
US3819366A (en) * 1969-03-21 1974-06-25 Aurium Res Corp Dental alloy
USB483256I5 (en) * 1973-06-15 1976-02-10
US4123262A (en) * 1977-07-06 1978-10-31 Pennwalt Corporation Dental gold alloy
US4350527A (en) * 1980-05-01 1982-09-21 Daniel Davitz Gold-colored, acid and corrosion resistant alloy
US4865809A (en) * 1988-09-30 1989-09-12 Daniel Davitz Copper-free gold alloy composition
US5635131A (en) * 1994-05-27 1997-06-03 Hoover & Strong, Inc. Palladium white gold alloy ring settings and method of making same

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438967A (en) * 1943-05-21 1948-04-06 Indium Corp Indium-gold article and method
US2596454A (en) * 1949-09-10 1952-05-13 Metals & Controls Corp Gold alloys
US3424577A (en) * 1966-05-25 1969-01-28 Jelenko & Co Inc J F Metal alloy composition
US3819366A (en) * 1969-03-21 1974-06-25 Aurium Res Corp Dental alloy
US3767391A (en) * 1969-05-19 1973-10-23 Pennwalt Corp Tarnish resistant alloy
USB483256I5 (en) * 1973-06-15 1976-02-10
US3981723A (en) * 1973-06-15 1976-09-21 Pennwalt Corporation White gold alloy
US4123262A (en) * 1977-07-06 1978-10-31 Pennwalt Corporation Dental gold alloy
US4350527A (en) * 1980-05-01 1982-09-21 Daniel Davitz Gold-colored, acid and corrosion resistant alloy
US4865809A (en) * 1988-09-30 1989-09-12 Daniel Davitz Copper-free gold alloy composition
US5635131A (en) * 1994-05-27 1997-06-03 Hoover & Strong, Inc. Palladium white gold alloy ring settings and method of making same

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